616232545 has 4 divisors (see below), whose sum is σ = 739479060. Its totient is φ = 492986032.

The previous prime is 616232543. The next prime is 616232549. The reversal of 616232545 is 545232616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 161391616 + 454840929 = 12704^2 + 21327^2 .

It is a cyclic number.

It is not a de Polignac number, because 616232545 - 2¹ = 616232543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 616232545.

It is not an unprimeable number, because it can be changed into a prime (616232543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61623250 + ... + 61623259.

It is an arithmetic number, because the mean of its divisors is an integer number (184869765).

Almost surely, 2^616232545 is an apocalyptic number.

It is an amenable number.

616232545 is a deficient number, since it is larger than the sum of its proper divisors (123246515).

616232545 is a wasteful number, since it uses less digits than its factorization.

616232545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123246514.

The product of its digits is 43200, while the sum is 34.

The square root of 616232545 is about 24824.0316024614. The cubic root of 616232545 is about 850.9712289299.

The spelling of 616232545 in words is "six hundred sixteen million, two hundred thirty-two thousand, five hundred forty-five".